\label{Authoring_Dynamic_Plot_Curve_Data}
The \textbf{data} tag is used to specify the values plotted in the
\textbf{gnuplot} tag (see ``Authoring Dynamically Generated Plots'' section
\ref{Authoring_Dynamic_Plot_Gnuplot}).
The \textbf{data} tag is only used in the \textbf{Curve} tag
(see ``Specifying Curves to Plot'' section \ref{Authoring_Dynamic_Plot_Curve}).
The data must be either a perl array, \texttt{@X}, or a comma separated list,
such as ``0.5,0.9,1.5, 2.4'' (without quotes). 'NaN' is a valid value.
Note the the "Y" values are entered in a separate array.
The function and number of \textbf{data} tags required varies based on the
line style (see ``Data and Line Styles'' section \ref{Authoring_Dynamic_Plot_Linestyle}) chosen for the
curve. Some linestyles require extra arrays for supplemental information.
In all cases the first \textbf{data} tag will hold the ``X'' values
and the second will hold the ``Y'' values.
All of the data sets in the \textbf{data} tag must have the same number of
elements.
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